:root {
  --vf-green: #2E7D32;
  --vf-green-dark: #1B5E20;
  --vf-orange: #F57C00;
  --vf-orange-dark: #E65100;
  --bg: #F5F7F5;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --danger: #c62828;
  --success: #2E7D32;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--vf-green); text-decoration: none; }
a:hover { color: var(--vf-green-dark); text-decoration: underline; }

.nav {
  background: var(--vf-green);
  color: #fff;
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 4px rgba(0,0,0,.08);
}
.nav .brand {
  display: flex; align-items: center; gap: 12px;
  font-weight: 700; font-size: 18px;
}
.nav .brand img { height: 32px; }
.nav .brand a { color: #fff; }
.nav .actions a {
  color: #fff;
  margin-left: 16px;
}
.nav .actions a:hover { text-decoration: underline; }

.container {
  max-width: 1200px;
  margin: 24px auto;
  padding: 0 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
}

h1, h2, h3 { color: var(--vf-green-dark); margin-top: 0; }
h1 { font-size: 24px; }
h2 { font-size: 19px; }
h3 { font-size: 16px; }

.btn {
  display: inline-block;
  background: var(--vf-green);
  color: #fff;
  padding: 9px 18px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}
.btn:hover { background: var(--vf-green-dark); color: #fff; text-decoration: none; }
.btn.btn-orange { background: var(--vf-orange); }
.btn.btn-orange:hover { background: var(--vf-orange-dark); }
.btn.btn-ghost { background: transparent; color: var(--vf-green); border: 1px solid var(--vf-green); }
.btn.btn-ghost:hover { background: var(--vf-green); color: #fff; }
.btn.btn-sm { padding: 5px 10px; font-size: 13px; }

label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 14px; }
input[type=text], input[type=email], input[type=password], input[type=url], textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
  font-family: inherit;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--vf-green);
  box-shadow: 0 0 0 3px rgba(46,125,50,.15);
}
.form-row { margin-bottom: 16px; }
.help { font-size: 13px; color: var(--muted); margin-top: 4px; }

.error {
  background: #fdecea;
  color: var(--danger);
  border: 1px solid #f5c6c6;
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 16px;
}

.success-banner {
  background: #e8f5e9;
  color: var(--vf-green-dark);
  border: 1px solid #a5d6a7;
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 16px;
}

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { background: #fafafa; font-weight: 600; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
tr:hover td { background: #fafafa; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}
.stat .label { font-size: 12px; text-transform: uppercase; color: var(--muted); letter-spacing: .05em; }
.stat .value { font-size: 28px; font-weight: 700; color: var(--vf-green-dark); margin-top: 4px; }
.stat .sub { font-size: 12px; color: var(--muted); margin-top: 2px; }

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 20px;
}

.qr-block {
  display: flex; gap: 24px; align-items: flex-start; flex-wrap: wrap;
}
.qr-block img { width: 220px; height: 220px; border: 1px solid var(--border); border-radius: 8px; padding: 8px; background: #fff; }
.qr-block .qr-actions { display: flex; flex-direction: column; gap: 10px; }
.qr-block .qr-url {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  background: #fafafa; padding: 8px 12px; border-radius: 6px; border: 1px solid var(--border);
  font-size: 13px; word-break: break-all;
}

.login-wrap {
  max-width: 420px; margin: 80px auto; padding: 0 20px;
}
.login-wrap .card { padding: 28px; }
.login-wrap .brand-row {
  display: flex; align-items: center; gap: 14px; margin-bottom: 20px;
}
.login-wrap .brand-row img { height: 40px; }
.login-wrap h1 { font-size: 22px; margin: 0; }

.heatmap {
  display: grid;
  grid-template-columns: 36px repeat(24, 1fr);
  gap: 2px;
  font-size: 10px;
}
.heatmap .hcell {
  aspect-ratio: 1; background: #eef2f0; border-radius: 2px; position: relative;
}
.heatmap .hcell[data-n] { background: var(--vf-green); }
.heatmap .label-y { color: var(--muted); padding-right: 4px; text-align: right; align-self: center; }
.heatmap .label-x { color: var(--muted); text-align: center; font-size: 9px; }

.muted { color: var(--muted); }
.row-flex { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }

.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; gap: 12px; flex-wrap: wrap; }
.toolbar .toolbar-actions { display: flex; gap: 10px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; font-weight: 600; }
.badge.active { background: #e8f5e9; color: var(--vf-green-dark); }
.badge.inactive { background: #f5f5f5; color: var(--muted); }

.footer { text-align: center; color: var(--muted); font-size: 12px; padding: 20px 0; }